Deep-well drill.



. DEEP WELL DRILL. APPLICATION FILED JAN.13.|917 RENEWEDMAR. 1.1919. y wmp-@m- Paltented Api',

if c., coofarz, or casarme, enamoran.

DEEP-WELL EDRUJL.

ilfiliillo Application filed January 1.3, rei?, Serial No. m2

To all wlw/n z'zf may concern:

Bc it known that l, .loi-IN C. CooNTz, a citizen of the United States, residing at Cushing, in the county of Payne and State of Oklahoma, have invented certain new and useful Improvements in -Deep-VVe1l Drills, of whiclithe following is a specification, reference being had to the accompanying draw- 1n s.

Ihis invention relates to well drilling devices and particularly to a combined bucket and drill.

One object of the invention is to provide a device for drilling deep wells comprising a hollow cylindrical body constituting a bue ret and provided with a check valve, the lower extremity of the body being formed with a plurality of drill members connected thereto, the body with its drill members being adapted to be vertically rcciprocated by the usual well drilling appliances to drive the drill. the hollow body constituting a bucket by which the mud at the, bottom of the drill hole may be lifted out of the drill hole.

Still another object is to provide means whereby the check valve. within the hollow body which retains the mud within the bucket may be released to permit the discharge of mud from the bucket.

Other objects will appear in the course of the following description.

My invention is illustrated in the-accompanying drawings, wherein- Figure 1 is a longitudinal sectional view of a drill and bucket constructed in accordance with my invention;

Fig. 2 is a section on the line 2-2 of Fig. 1;

Fig. 3 is an under side plan view;

'Fig 4 is a perspective view of one of theV drills detached; and

Fig. 5 is a section on an enlarged scale on the line 5-5 of Fig. 4.

Fig. 6 is a broken view of the implement for lifting the ball check valve.

Referring to these drawings, it will be seen that the body of my well drilling device consists of a cylindrical section of pipe. This cylindrical body may be made of a pluralityT of pipe sections or of a single pipe section and in ordinary operations this cylindrical body will have an internal diameter of about seven inches and be about twenty feet in length. About a foot from its lower end, the body 10 will be provided with an internal Collar designated 11, this collar being pref- Speeication et )Letters Patent.

Patented Apr. 29, Eiilila ,2347. Renewed Larch 1, 1919. Serial No. 256,193.

erably semi-circular in cross section so as to provide a seat 12 for a check valve 13 which 1s globular in formand will have a diameter of about three and one-half inches in actual ractice, the internal diameter of the collar eing about three inches. The ball check valve 13 may p referably be made of cast steel. The collar 11 is held to the cylindrical body in any suitable manner, as for instance' by the countersunk screws 14. Above the collar 11 the body is reinforced or thickened, either by increasing the thickness of the cylindrical body above this collar or by the addition of an internal sleeve. I have designated this thickened portion l5. Preferably the thickened portion of the body will be about three-quarters of an inch thick, while below the thickened portion the portion will be approximately about onequarter of an inch thick. Below the collar 1l the body is formed with a longitudinally extending slot 16 for the purpose of inserting an implement which will be later described whereby the ball check valve may be raised from its seat.

Below the cylindrical body are a plurality of radially disposed drills designated 17. li have illustrated three drills arranged radially, each of these drills on its under face being beveled as at. 15% and having a vertical transversely curved outer face 19. One of these drills is illustrated in detail in Figs. i and 5. Each drill comprises at its upper end a transversely curved web 2O and a downwardly extending shank integral with the web, there being a shoulder 22 at the juncture of the shank with the web 20, this shoulder being for the support of the shell or cylinder 16, as illustrated most clearly in Fig. 1.

The drill shank has its inside face upwardlyand outwardly inclined, as shown in Fig. 1, and transversely curved, this inside face being designated 21. The shank tapers laterally downward for a distance. then ex tends almost straight downward as at 19 and at its lower end is formed with the bevel 18 previously described. The outer edge of the lower end of the drill has the outwardly extending cutting lip 23 projecting slightly beyond the plane of the wall 19 in the cylinder. nasmuch as the shank has its side faces 19a tapering downward and inward, a

-space 24 is provided when the drill sections are assembled through which the mud or other semi-liquid material can pass upward cylindrical 33 is attached. The body is into the body of the drill. The segmental webs 20 which form the upper end of each drill are attached to the cylindrical bod means of stud bolts or screws 2 lf t ere are three drills, each of the plates 20 will be equal to one-third of a circle so that the plates will lit snugly together and dispose each drill 17 at an angle of 20 relative to its neighbors. lt will be seen by removing the screws 27 that the drills may be readily removed and replaced, thus permittin the drills to be readily ground or new dri ls to be put in place of old drills 'lhe implement for lifting the ball check valve 13 is in the form of an angular b ar comprising a handle 29 and a blade 30 disposed at a right angle to the handle. The handle may be of any suitable form but the blade is preferably relatively thin and is insertible through the slot 16. The blade is provided with a shoulder 31 adapted to rest on the lower en of the slot 16 when the blade is in place so that when the blade is in place with the shoulder resting upon the lower end of the slot 16, the weight of the handle Will cause the blade to press upwary on the ball, lifting it and causing the blade to bind against the collar 11. Thus the ball may be held lifted while the mud and water within the body flows out.

The operation of this invention will be obvious from what has gone before. rlhe upper end of the body is provided with a cross bar or bridle 32, triangular in shape, to which the cable or other iiexible connection lowered down into the well and then vertically reciprocated in the usual manner so as to cause the drills to cut into the rock, mud or other niaterial. The mud and eut material gradually passes up between the drills and as the drill 1s. reciprocated the ball cheek valve rises to permit the mud to flow into the upper portion of the body above the ball. Upon the lifting up of the body and drill, however, the ball and check valve closes. Eventually the drill is raised entirely out of the well with the bucket, formed by the body, full of mud, and then the implement ha\ ing the blade 30 is Ainserted through the slot, thus lifting the ball, whereupon semi-liquid material flows out-of the bucket through the space` between these segveral drills, whereupon the device is ready for further use.

While I have illustrated certain details of construction, l wish it understood that l am not limited to this as it is obvious that these details may be varied.

Having described my invention, claim is:

l. ln a well drilling device, a cylindrical body, drills mounted upon the lower end of the body, an annular cheek valve seat mounted within the body, the seat being semi-circular in cross section, the wall of the body below the check valve seat having a slot, and-'a ball valve normally resting upon said seat', the slot permitting the insertion of an implement to shift the check valve from its seat and hold it so displaced.

2. A well drillingfmechanism including a. hollow cylindrical body, opei at its opposite ends, and a plurality of drills` attached to the lower end of the body and extending downward therefromeach drill at its upper end having a relatively thin curved web engaging the body, the transversely curved webs of all of the drills 'completing a circle, thesides of each drill shank being downwardly and inwardly beveled, the inner face of each shank extending upward for a distance from the cutting edge of the drill and then being beveled outward and upward to said web, there being` a shoulder formed upon the outer face of the drill at the junction of the web with the body of the drill, this shoulder supporting the hollow cylindrical body.

ln testimony whereof I hereunto affix my signature in the presence of two witnesses.

JOHN C. COONTZ.

what l Vitnesses:

EUGENE C. WHITE, FRANK TATMAN.

the mud or other 

